added initial unit tests
added unit tests for fastLm{Bench,Chol1,Chol2}
better way to load trees dataset
better way to load trees dataset
Remove Conrad's text about Armadillo, as suggested by Dirk
Add RcppEigen.package.skeleton and support files.
Add reference to web page
Add support for sparse Cholesky and LU
Add support for sparse Cholesky and LU
Add support for inline package
Documentation based on unit tests.
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Minor clarification.
Initial (not very good) implementation of "fastLmSVD", which isn't really that fast.
oops: s/Armadillo/Eigen/
Change references to Armadillo into Eigen; author order in copyright statements.
Add wrap instantiations for ArrayXd, ArrayXXd classes in Eigen
Refactoring of the fastLm code to allow algorithms to be added easily.  Adjust docs and R code accordingly.
Minor fix in punctuation.
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